## Progressive Summary **Executive Summary (Layer 3)**: **When a person applies harsh evidentiary standards to one source but credulously accepts another that happens to support their preferred conclusion, the asymmetry itself exposes motivated reasoning — the standard is tracking the desired answer, not the evidence.** **Key Insight (Layer 2)**: "people who say you can't trust a word said by the IRGC who apparently believe anonymously sourced social media posts." **Context (Layer 1)**: JD Vance (US VP), X post, 2026-06-12, rebutting critics of a reported Iran nuclear / Strait of Hormuz deal. **Cross-Domain Connections**: [[Outlier Advice Bias]], [[Epistemic Stalemate]] **Discoverability Score**: 7/10 --- ## Atomic Insight A reliable tell for motivated reasoning: the same person holds two sources to opposite evidentiary bars, and the split lines up exactly with which source flatters their conclusion. Vance's example — dismissing the IRGC as categorically untrustworthy while crediting anonymous social-media posts that contradict it — is structurally identical to an investor who demands audited financials before buying but acts on a hot tip to sell, or a scientist who scrutinizes disconfirming studies while waving through confirming ones. The diagnostic move is not "which source is right" but "is the skepticism applied symmetrically?" Asymmetric credence, calibrated to the desired outcome rather than to source quality, is the fingerprint. Detect it in yourself by asking whether you would accept the same evidence if it pointed the other way. [[Cost of Agreement as the Actual Persuasion Obstacle]] names the mechanism this asymmetry is evidence of: the evidentiary bar shifts because accepting the disfavored source costs the person their position, not because the source is actually weaker. ## Source - [[JD Vance on Iran Strait Deal Disinformation]] — JD Vance (@JDVance), 2026-06-12 — https://x.com/JDVance/status/2065449280773541949